Fraunhofer Institute for Microstructure of Materials and Systems IMWSProfile
Dr. René Feder, Deputy Group Leader »Microstructure of Optical Materials«, Team Leader »Hybrid Systems«
Main research areas
The main field of research is defect and thin-film analysis of optical coatings. Depending on the problem, various methods of microstructure analysis are used, mainly SEM-FIB, ToF-SIMS and TEM. The possibility of combining different methods to analyze individual samples represents a great added value in the search for the causes of defects. In-depth knowledge of various PVD methods with industrial relevance supports the interpretation of the analytical results and provides initial starting points for error prevention. This also forms the basis for microstructure-accompanied process development, which can significantly reduce development times and costs. The material systems investigated are extremely diverse, including spectacle lenses, micro-optics, laser mirrors, EUV optics and nanolaminates.
Career
since 2021
Team Leader Hybrid Systems at the Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Halle (Saale)
since 2020
Deputy Group Leader Microstructure of Optical Materials at the Fraunhofer IMWS
since 2017
Research associate at the Fraunhofer IMWS
2016 - 2017
Research fellowship of the German Research Foundation at the University of Nebraska-Lincoln (USA)
2015 - 2016
Research assistant at the Institute for Energy Research and Physical Technologies at Clausthal University of Technology
2011 - 2015
Research assistant and doctoral student at the Leibniz Institute for Surface Modification e.V. Leipzig
PhD on the topic “Ion beam assisted layer deposition of Ag and Ge - Relationship between the properties of the ion beam, the layer forming particles and the deposited layers” at the University of Leipzig
2009 - 2011
Research assistant in the Nuclear Solid State Physics group at the University of Leipzig
2003 - 2009
Studied physics at the University of Leipzig
Publications
Selected articles in journals with scientific quality control (complete list at http://orcid.org/0000-0002-5694-5332):
Ufuk Kilic, Yousra Traouli, Matthew Hilfiker, Khalil Bryant, Stefan Schoeche, Rene Feder, Christos Argyropoulos, Eva Schubert, Mathias Schubert. Nanocolumnar metamaterial platforms: Scaling rules for structural parameters determined from optical anisotropy. Advanced Optical Materials 12 (2024) 2302767
Karl Kreuzer, Philipp Farr, Philipp Henning, Michael Vergöhl, Stefan Bruns, Thomas Melzig, Christian Patzig, René Feder. A-Si/SiO2 nanolaminates for tuning the complex refractive index and bandgap in optical interference coatings. Applied Optics, 63 (2024) 5939
Ufuk Kilic, Matthew Hilfiker, Alexander Ruder, Rene Feder, Eva Schubert, Mathias Schubert, Christos Argyropoulos. Broadband enhanced chirality with tunable response in hybrid plasmonic helical metamaterials. Advanced Functional Materials, 31 (2021) 2010329
Martin Engler, Frank Frost, Sven Müller, Sven Macko, Moritz Will, René Feder, Daniel Spemann, René Hübner, Stefan Facsko, Thomas Michely. Silicide-induced ion beam structuring of Si (001). Nanotechnology, 25 (2014) 115303
René Feder, Carsten Bundesmann, Horst Neumann, Bernd Rauschenbach. Ion beam sputtering of Ag - angular and energy distributions of sputtered and scattered particles. Nucl. Instr. Meth. B, 316 (2013) 198-204